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The Ticks (Arachnida: Acari: Ixodida) of Arkansas

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The Ticks (Arachnida: Acari: Ixodida) of Arkansas View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by ScholarWorks@UARK Journal of the Arkansas Academy of Science Volume 70 Article 25 2016 The ickT s (Arachnida: Acari: Ixodida) of Arkansas C. T. McAllister Eastern Oklahoma State College, [email protected] L. A. Durden Georgia Southern University, Statesboro H. W. Robison Southern Arkansas University Follow this and additional works at: http://scholarworks.uark.edu/jaas Part of the Entomology Commons, Parasitology Commons, and the Population Biology Commons Recommended Citation McAllister, C. T.; Durden, L. A.; and Robison, H. W. (2016) "The ickT s (Arachnida: Acari: Ixodida) of Arkansas," Journal of the Arkansas Academy of Science: Vol. 70 , Article 25. Available at: http://scholarworks.uark.edu/jaas/vol70/iss1/25 This article is available for use under the Creative Commons license: Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0). Users are able to read, download, copy, print, distribute, search, link to the full texts of these articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author. This Article is brought to you for free and open access by ScholarWorks@UARK. It has been accepted for inclusion in Journal of the Arkansas Academy of Science by an authorized editor of ScholarWorks@UARK. For more information, please contact [email protected], [email protected], [email protected]. Journal of the Arkansas Academy of Science, Vol. 70 [2016], Art. 25 The Ticks (Arachnida: Acari: Ixodida) of Arkansas C.T. McAllister1*, L.A. Durden2, and H.W. Robison3 1Science and Mathematics Division, Eastern Oklahoma State College, Idabel, OK 74745 2Department of Biology, Georgia Southern University, Statesboro, GA 30458 3Department of Biology, Southern Arkansas University, Magnolia, AR 71754-9354 *Correspondence: [email protected] Running Title: Ticks of Arkansas Abstract ticks, especially Dermacentor variabilis but also (rarely) by Otobius megnini, Amblyomma americanum, Although ticks are a nuisance to humans and other Amblyomma maculatum, Dermacentor albipictus, animals, they are an important part of the biota of Ixodes scapularis and Rhipicephalus sanguineus North America. In addition, they are vectors of many (Strickland et al. 1976, Durden and Mans 2016). tick-borne disease agents that can negatively affect Despite the medical and veterinary importance of ticks higher vertebrates. In Arkansas, there have been no in Arkansas, some species may play an important recent comprehensive summaries of the ticks (Acari: biological role by promoting genetic diversity in host Ixodida) in the last 40+ yrs. Here, we provide a populations, regulating host population densities summary of the ticks of the state and note the disease (either directly or indirectly by transmitting pathogens) agents they can transmit. and preventing overgrazing of plant resources (Durden and Keirans 1996a). Introduction In Arkansas, Lancaster (1957a) was the first to produce a monograph on the ticks of the state. Later, Ticks are ectoparasites that feed on the blood of Tugwell and Lancaster (1962, 1963) documented the various vertebrates, mainly birds and mammals, but hosts and seasonality of ticks in northwestern some species parasitize amphibians and reptiles. They Arkansas. Lancaster (1973) provided detailed also serve as vectors of several tick-borne disease information of the ticks of Arkansas which included 18 agents that affect humans and other vertebrates. The species occurring in the state. Later, Ellis (1975) importance of ticks as vectors of pathogens in provided a synopsis of common Arkansas ticks and Arkansas has been highlighted previously (Anonymous Lancaster (1979) provided a checklist of Arkansas 1995). In 2010, Arkansas ranked first among U.S. ticks. Trout and Steelman (2010) surveyed 5 species of states for reported cases of tularemia (caused by ticks parasitizing canines and/or deer in Arkansas (A. Francisella tularensis), fourth for Rocky Mountain americanum, A. maculatum, D. variabilis, I. scapularis spotted fever (RMSF) (caused by Rickettsia rickettsii), and R. sanguineus) and documented their seasonalities and tenth in reported cases of Human Monocytic and distributions in the state. McAllister et al. (2013) Ehrlichiosis (HME) (caused by Ehrlichia chaffeensis) reported on some ticks from sciurid rodents of the (CDC 2010). Kardatke et al. (1992) documented a state, and Tumlison et al. (2015) provided records of cluster of zoonotic pathogens [Spotted Fever Group ticks from several rodents. However, for more than 40 Rickettsiae (SFGR), ehrlichiae and Borrelia yrs (Lancaster 1973), there have been no attempt to burgdorferi] detected in ticks at Fort Chaffee, provide a comprehensive list of Arkansas ticks. Arkansas. However, Trout-Fryxell et al. (2015) The purpose of this report is three-fold: (1) update molecularly detected SFGR in 5 species of ticks from the ticks that currently occur in Arkansas including Arkansas and identified Rickettsia montanensis and records of ticks accessioned into the United States candidatus Rickettsia amblyommii but not R. National Tick Collection (USNTC) which is on long rickettsia, suggesting that some Arkansas cases term enhancement loan to Georgia Southern University diagnosed as RMSF may actually represent infections (GSU), (2) provide the most recent taxonomy on these with other rickettsial agents. Tick paralysis can be ticks, and (3) note the species of ticks that are vectors caused by the release of certain salivary components for disease agents. Lancaster (1973) provided by attached ticks (usually females) of some Arkansas excellent diagnostic line drawings and illustrations for Journal of the Arkansas Academy of Science, Vol. 70, 2016 141 Published by Arkansas Academy of Science, 2016 141 Journal of the Arkansas Academy of Science, Vol. 70 [2016], Art. 25 C.T. McAllister, L.A. Durden, and H.W. Robison the 18 species of ticks he recorded from Arkansas. Diagnostic illustrations for an additional species (Ixodes woodi) we record here from the state can be found in Keirans and Clifford (1978) and Durden and Keirans (1996). Methods We conducted an exhaustive search of the scientific literature for information on Arkansas ticks. In addition, collection data on tick specimens deposited or recorded in the USNTC were examined. In the lists that follow, the following abbreviations are used: A = Adult tick(s) (sexes were not determined for some older tick specimens deposited in the USNTC). M = Male(s). F = Female(s) Figure 1. County outline map of Arkansas showing major N = Nymph(s) physiographic regions with dots (●) in 3355 cocouuunntiesnties hhavinavinavingaving USNTC L = Larva(e) records of ticks; some counties have multiple records. *Collector (WJB = WJ Baerg SJC= SJ Carpenter; JLL=JL Lancaster; DAS = D.A. Saugey; FCW = FC Wonder) likely from a bat). Additional O. kelleyi were reported RML (followed by a number) = accession number in from cave-dwelling big brown bats, Eptesicus fuscus. the USNTC for the reported specimen(s). This tick has been recorded from several species of All Arkansas tick specimens in the USNTC were bats across North America (Cooley and Kohls 1944a). examined; however, some older specimens had been USNTC records (Fig. 2): 1F, in building, Stone Co., returned to the submitters so the exact number of Mountain View, 1952, JLL (RML 31120). 1M ex males, females or immatures in each collection could Columbia livia, Stone Co., Apr. 1954, JLL (RML not always be determined. Common tick names listed 32974). 9L ex E. fuscus, Benton Co., War Eagle (bat follow the Common Names of Insects Database cave), 3 Mar. 1962, JLL (RML 37888). (Entomological Society of America 2016). Ornithodoros concancensis Cooley and Kohls – no Results common name. Lancaster (1973) reported this tick from a nest of an eastern phoebe (Sayornis phoebe) in We report a total of 3 argasid (soft tick) species Stone County (Fig. 2). However, it is typically an and 16 ixodid (hard tick) species from 35 of 75 (47%) ectoparasite of bats and has also been collected from counties of Arkansas (Fig. 1). One of these, I. woodi, is bat roosts (Cooley and Kohls 1944a). reported from the state for the first time. Another species, Rhipicephalus (Boophilus) annulatus, has been Otobius megnini Dugés – ear tick. Immature stages of extirpated from Arkansas, whereas an additional this tick typically parasitize ungulates (but it can also species, Amblyomma maculatum (Gulf Coast tick), has feed on humans) and are often found in the internal ear been expanding its range into this state. In addition to canal where the spinose nymphal integument facilitates the species reported here, humans (or pets) returning to attachment. Adults do not feed. This tick is native to Arkansas from other parts of North America or the Mexico and the southwestern United States (Cooley world could bring back attached non-native tick and Kohls 1944a). However, livestock, especially species. cattle, moved from these regions can introduce O. megnini into new areas. This occurred in the early Family Argasidae (soft ticks) 1950s in Arkansas when herds of cattle were imported from Texas. Lancaster (1973) reported 3 established Carios (Ornithodoros) kelleyi (Dugés) – no common foci of this tick in Arkansas (Independence, Izard, and name. A single specimen was reported by Lancaster Yell counties) and reported other specimens from (1973) in Stone County from a pigeon (more Franklin and Logan counties (Fig. 3). Lancaster Journal of the
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